In each newly created account all the templates files for the customisation of the shell are provided. You can edit these files using the examples described in the previous section to customise their environments. In these templates you will find 3 parts: 1 the header part which gives the email address in case of serious problems, the version number, the generation date, the authors, etc. 2 the hook to the HEPiX scripts. This hook is not required if the HEPiX scripts are installed in enforced mode. You should anyway NEVER remove these 3 lines for the C-shell users if ( -r /usr/local/lib/hepix/central_env.csh ) then source /usr/local/lib/hepix/central_env.csh endif or the following lines for the Bourne-shells users: if [ -r /usr/local/lib/hepix/central_env.sh ]; then . /usr/local/lib/hepix/central_env.sh fi You can find something similar to these lines here. 3 commented lines. All these lines can be uncommented. They give users examples of what they can do and you can choose now to use them. They can use it, remove it, update it as they wish. These templates give other examples and, for tcsh or zsh shells, there are other related documents like [7], [3], [4], [5]. Templates also exist for the xprofile, xclients and xkeyboard files as well.